There's a reason the mortise and tenon joint has been used for thousands of years—it can be carved using basic woodworking tools and it'll last for ages. John - Flickr CC Wikimedia 2.0 Gear-obsessed ...
Filling a roundish hole in a plank is a not-uncommon requirement: knot holes, or reclaimed wood accompanied by cuts for plumbing and heating, can present boards that need something beyond wood filler ...